Oil saver



A. S. FElLD OIL SAVER Filed March 2, 1928 gnvcntoc A 2 Patented July 22,1930

Q ALEXANDER S. FEILD, OF PYOTE, TEXAS OIL v seven.

Application filed March 2,

This invention relates to new and useful improvements in an 011 saver.

1928. Serial No. 258,629.-

shoulder '3 having an annular groove 4: in its upper face.

One object of the invention is to provide a The reduced lower end of the casing head device of the character described specially designed to be used in connection with a cable tooLdrilling rig to prevent the escape and lossiof oil from the well. v

Another object of the invention is to provide an oil saver through which the drilling line works and which has a swiveling connection with the upper end of the well pipe or casing to the end that it will notbe injured, bent, or distorted by the lateral swinging of the line as it is reciprocated by the walking 1 beam through which it is operated.

A further feature of the invention is to provide a device of the character described through which the drilling line works and which forms a close fit'witli said line and with $0 the well casing so as to prevent the escape of oilliup through said -oil saver and from the we A. still further feature of the invention resides in the provision of a device of the'character described which is of simple construction, may be cheaply and easily produced and readily applied to or detached from the well casing and drilling line.

With the above and other objects in view this invention has particular relation to certainnovel features of construction, operation and arrangement of parts an example of which is given in this specification and illus- 5 trated in the accompanying drawings, where- Figure 1 shows a vertical sectional view of the device and associated parts,

V Figure 2 shows a transverse sectional view thereof, taken on the line 2-2 of Figure 1,

and

Figure 3 shows a plan view of the line clamp, showing the line in section.

Referring now more particularly to the at drawings, wherein like numerals of reference designate similar parts in each of the figures the numeral 1 designates the well casing which is set in the Well bore, and the numeral 2 designates a casing head which is reduced W at its lower end, formingthe inside annular is screwed on to the upper end of the casing 1.

' Within the casing head there is a body formed of the upper and lower sections 5 and 6, separably secured together by the stud bolts 7 whose lower ends are screwedinto the lower section 6 and which extend'up through the upper section 5 and whose upper ends are threaded to receive the nuts 8. A suitable gasket 9 is interposed betweenthe sections 5 and 6. V

The facing sides of the sections of said body have the concaved recesses 10 and 11 which register to form a spherical seat having the annular gaskets 12, 13, preferably of brass, seated in the respective sections-'5 and 6, their inner surfaces conforming to the contour of and flush with said spherical seat. There is a tubular cylinder 14, preferably 9 formed of steel andhaving its mid portion formed into a ball joint member 15 which works in the spherical bearing formed between the sections 5 and 6; The lower end of this cylinder has an internal annular shoulder 16 against which the lower end of the cast iron, sectional cylinder liner 17, abuts. Threaded onto the upper end of the cylinder 17 and abutting the upper end of said liner there is'a flanged nut 18. The lower section 6, of the body, has an annular rib 19, which works in the groove 4 of the casing head.

There is a tubular steel plunger 20 which works through liner 17 and has a ground joint fit therewith and this plunger extends down beneath the cylinder and works closely through and extends above the nut 18. Attached to the upper end of the plunger 20 there is a stufiing box 21 includ ing the packing 22 held in the stufiing box by means of the gland 23, which is adjustably secured in place by 'means of the adjusting bolts 2%. The operating cable 25 works through the plunger 20 and is closely surrounded by the stuffingbox packing 22 and which also works snugly through the flanged nut 26, which is threaded onto the lower end of the plunger.

. standing box 27 carried by the stufling ,box

and in which are the clamp jaws 28, 28 one on each side of the line and one of which may be operated by means of the shaft 29 which is threaded through the wall of the box 27 and whose inner end works against one i of said jaws 28. By the operation of said shaft 29 the clamp jaws may be secured around or released from the line 25.

The upper end of the operating line, or cable, 25. is attached to one end of the con.- ventional walking beam 30. The usual cable tools (not shown) are attached to the lower end of the line in the usual manner and for the usual purpose. 4

It is clear that as the end of-the beam 30, to which the line is attached, swings upwardly, the line itself will move upwardly, and will also swing laterally, but this lateral swing, or movement of the line will not have a tendencyto bend, injure, or distort the plunger or the associated parts by reason of the-fact that the cylinder, and plunger working therevice, and

- then lifted out.

can swivel in the body of the derelative to the'casing head, and at the same time there can be no leakage of oil either around the line, around the plunger, or around the ball and socket joint of the cylinder. This last named joint may be lubricated throughany type of oil cups, as 31.

The upper corresponding part of thecasing head, have the cooperating mutilated threads 32 by means of which the body may be secured in said casing head. If it be desired to remove the body and'its attached parts from the easing head the screws 32 maybe released by giving said body a quarter turn and the body Sockets 33 are provided in the upper side of thebody into 1 either of which an upstanding pin may a cable then attached to said inserted pin and the body then turned to release it, from a through,

distance, without danger to the workmen.

'tions, to release the clamp jaws It is sometimes necessary, during opera- 28 from the line 25, and in the event'of such release while there is strong pressure in the well the plunger 20 will be prevented from blowing out by the engagement of the nut 26 against the lower end of the cylinder 14.

The parts above described may-be made of any suitable material and mechanical changes. -may be made 111 form or structure and equivalents substituted-for the parts shown and I reserve the right to make such structural changes and substitutions as may be found practical and such as, may be comprehended withinthe scope of the appended claims.

hat Iclaim is j 1. The combination with a casing in a well, of a casing head attached to the upper end thereof having 'an inside annular shoulder section 5, of the body, and the be inserted and of a casing head attached to the upper end thereof, a two part body in said casing head having an internal seat, a cylinder having a spherical enlargement thereon which conforms in shape to and works closely within said seat, a tubular plunger working through said cylinder, and forming close fitting joints with the upper and lower ends thereof, a liner in the cylinder around the plunger, upper and lower abutments carried by the cylinder against which the ends of the liner abut, an operating line through the plunger, means for clamping the lineto the plunger and means forming a fluid tightjoint between said line and plunger.

. 3. The combination with a casing ,in a well, a casing head attached to the upperend thereof, a body in said head. said body and head being provided, one with an annular rib and the other withan annular groove into which the headand having a fluid tight joint therewith, a tubular plunger working through said cylinder a line working through and attached .to said plunger. an external abutment on the lower end of the plunger adapted -to abut the lower end of the cylinder to limit a ball joint member thereon which works in said bearing the lower end of the cylinder upper and lower sections dethe rib fits, a cylinder mounted to swivel in I having an internal abutment liner in the cylinder whose lower end abuts said abutment, a nut threaded on to the upper end of the cvlinder and abutting the upper end of said liner, a tubular plunger movable longitudin'ally through said cylinder, an external abutment on the lower end of the plunger beneath the cylinder, a stnfiing box carried by the upv per end of the plunger above the cylinder and formed to receive and closely surround an operatingjli-ne and means connecting said line to said plunger.

' 5. A device of eluding a casing head adapted to be connected to the upper end of a casing in a well, a

the character described inbody in said head having a socket bearing,

a cylinder having a ball joint member thereon which works in said bearing the lower end of the cylinder having an'internal abutment,

- and body together.

a liner in the cylinder whose lower end abuts sald abutment, a nut threaded on to the upper end of the cylinder and abutting the upper end of said liner, a tubular plunger movable longitudinally throughsaid cylinder,'a'n external abutment on the lower end of the plunger beneath the cylinder and a stufiing box carried by the upper end of the plunger I above the cylinder andformed to receive and closely surround an operating line, the upper end of the casing head, and the upper section of said body having intermeshing-tnw' tilated threads detachably securing said head 6. A device of the character described including a casing head, a body in said head having a socket bearing, a cylinder having a universal joint member thereon which works in said bearing, the lower end of the cylinder having an internal abutment, a liner in the cylinder whose lower end abuts said 7 abutment, a nut threaded onto the upper end of the cylinder and abutting'the upper end of said liner, a tubular plunger movable lon gitudinally through said cylinder, an external abutment on the lower end of said plunger beneath the cylinder and a stufling box carried by the upper end of the plunger above the cylinder and formed to receive and closely surround an operating line, the upper end of the casinghead, and the upper section of said body having interlocking means detachably securing the head and body together.

In testimony whereof I have signed my name to this specification.-

- S. FEILD. 

